Example usage for org.w3c.dom Document getElementsByTagName

Introduction

In this page you can find the example usage for org.w3c.dom Document getElementsByTagName.

Prototype

public NodeList getElementsByTagName(String tagname);

Source Link

Document

Returns a NodeList of all the Elements in document order with a given tag name and are contained in the document.

Usage

From source file:Main.java

/**
 * Get textvalue from element path or attribute
 * @param doc//from ww w.j a  v  a2  s.  c o  m
 * @param path   path ("/root/channel/name") or
 *             attribute ("/root/channel/@id")
 * @return
 */
public static String getText(Document doc, String[] path) {
    NodeList nodes = doc.getElementsByTagName(path[0]);
    Element element = (Element) nodes.item(0);
    return getText(element, path, 1);
}

From source file:org.aectann.postage.TrackingStatusRefreshTask.java

private static String getFirstVaueOrNull(Document document, String tag) {
    NodeList elements = document.getElementsByTagName(tag);
    String result = null;/*from w  ww  .j  a  v  a  2s .  co  m*/
    if (elements.getLength() > 0) {
        Node firstChild = elements.item(0).getFirstChild();
        String nodeValue;
        if (firstChild != null && (nodeValue = firstChild.getNodeValue()) != null && nodeValue.length() > 0) {
            result = nodeValue;
        }
    }
    return result;
}

From source file:Main.java

/**
 * Given an XML string, return the textContent of all of the tags that match tagName as a list.
 * @param xmlStr/* w w w  . j  a  v a 2 s  . c  o  m*/
 * @param tagName
 * @method getValuesForNode
 * @static
 */
public static List<String> getValuesForNode(String xmlStr, String tagName) {

    List<String> values = new ArrayList<String>();
    try {

        DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();

        InputStream is = new ByteArrayInputStream(xmlStr.getBytes("UTF-8"));

        Document doc = docBuilder.parse(is);

        doc.getDocumentElement().normalize();

        NodeList nodes = doc.getElementsByTagName(tagName);
        int nodeCount = nodes.getLength();

        for (int i = 0; i < nodeCount; i++) {
            Node node = nodes.item(i);
            values.add(node.getTextContent());
        }

    } catch (Exception e) {
        e.printStackTrace();
    }

    return values;

}

From source file:Main.java

public static Node findNodeByAttribute(Document document, String tagName, String attributeName,
        String attributeValue) {/*from w  w  w . j a v a 2 s .c o m*/
    Node foundNode = null;
    NodeList nodes = document.getElementsByTagName(tagName);
    for (int i = 0; i < nodes.getLength(); i++) {
        Node node = nodes.item(i);
        for (int j = 0; j < node.getAttributes().getLength(); j++) {
            Node attribute = node.getAttributes().item(j);
            if (attribute.getNodeName().equals(attributeName)
                    && attribute.getNodeValue().equals(attributeValue)) {
                foundNode = node;
                break;
            }
        }
        if (foundNode != null)
            break;
    }
    return foundNode;
}

From source file:net.ftb.data.news.RSSReader.java

public static List<NewsArticle> readRSS() {
    try {/*from  ww  w.  j a  va2 s  . c  o m*/
        List<NewsArticle> news = Lists.newArrayList();

        DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
        URL u = new URL(Locations.feedURL);
        HttpURLConnection conn = (HttpURLConnection) u.openConnection();
        conn.connect();
        if (conn.getResponseCode() != 200) {
            Logger.logWarn("News download failed");
            AppUtils.debugConnection(conn);
            conn.disconnect();
            return null;
        }
        Document doc = builder.parse(conn.getInputStream());
        NodeList nodes = doc.getElementsByTagName("item");

        for (int i = 0; i < nodes.getLength(); i++) {
            Element element = (Element) nodes.item(i);
            NewsArticle article = new NewsArticle();
            article.setTitle(getTextValue(element, "title"));
            article.setHyperlink(getTextValue(element, "link"));
            article.setBody(getTextValue(element, "content:encoded"));
            article.setDate(getTextValue(element, "pubDate"));
            news.add(article);
        }

        return news;
    } catch (Exception ex) {
        Logger.logWarn("News download failed", ex);
        return null;
    }
}

From source file:Main.java

/**
 * DOM Parser method. /*from w w w.  ja v a2 s  .  c  om*/
 * Converts the input xmlString into List<String> of all the text in the nodes named nodeName.
 * The memory footprint is small enough when we deal with less than 200 tweets.
 * 
 * @param xmlString
 *            The xml string
 * @param nodeName
 *            the name of the node, we are intersted in (e.g. "text")
 * @param trimString
 *            if we want to trim a particular pattern from every node's text, we pass it as trimString, e.g. "(https?://[^\\s]+)"
 * @return List of all the text strings from every node named nodeName. trimString text is trimmed from the result strings.
 */
public static List<String> parseNodesFromXml(String xmlString, String nodeName, String trimString) {
    List<String> nodeTexts = new ArrayList<String>();

    try {
        DocumentBuilder db = DocumentBuilderFactory.newInstance().newDocumentBuilder();
        InputSource inputSource = new InputSource();
        inputSource.setCharacterStream(new StringReader(xmlString));

        try {
            Document document = db.parse(inputSource);
            NodeList nodes = document.getElementsByTagName(nodeName);
            for (int i = 0; i < nodes.getLength(); i++) {
                String nodeText = nodes.item(i).getTextContent();
                String trimmedNodeText = trimStringFromText(trimString, nodeText);
                nodeTexts.add(trimmedNodeText);
            }

        } catch (SAXException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

    } catch (ParserConfigurationException e) {
        e.printStackTrace();
    }

    return nodeTexts;
}

From source file:Main.java

/**
 * Returns the element specified with the given tag name in the specified XML text. Assumes that
 * there is only one tag of the speicified name in the XML text.
 * // www . j a  va 2 s  . c  o  m
 * @param xmlText
 * @param tagName
 * @return
 */
public static Element getSingleElement(String xmlText, String tagName) {
    if (!hasSingleTag(xmlText, tagName)) {
        return null;
    }

    Document doc = getDomDocument(xmlText);
    NodeList nodes = doc.getElementsByTagName(tagName);
    return (Element) nodes.item(0);
}

From source file:Main.java

/**
 * Appends two documents/* ww  w.  j a  va  2  s.c  om*/
 * 
 * @param curDoc      source document
 * @param appendDoc      document to append to source
 * @param eleNameToAdd   element tag name in source to which the appendDoc has to be appended as a child
 * @throws Exception
 */
public static void appendDocs(Document curDoc, Document appendDoc, String eleNameToAdd) throws Exception {

    Node importNode = curDoc.importNode(appendDoc.getDocumentElement(), true);
    curDoc.getElementsByTagName(eleNameToAdd).item(0).appendChild(importNode);

}

From source file:com.amazon.advertising.api.sample.ItemLookupSample.java

private static NodeList fetchASIN(String response) {
    NodeList nodelist = null;/*from   w ww.  j  a  v  a 2 s. c o m*/
    try {
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document doc = db.parse(response);
        nodelist = doc.getElementsByTagName("ASIN");

    } catch (Exception e) {
        e.printStackTrace();
    }
    return nodelist;
}

From source file:Main.java

public static String getCharacterDataFromDocumentWithKey(final Document document, final String key) {
    String result = null;//w  w w  . j  av a  2  s . c  o  m
    if (document != null) {
        final NodeList jobNodeList = document.getElementsByTagName(key);
        final CharacterData characterData = (CharacterData) jobNodeList.item(0).getChildNodes().item(0);
        result = characterData.getNodeValue();

    }
    return result;
}